Multiple drill template



Oct. 12, 1948. H. o. scHULTZ 2,451,123

MULTIPLE DRILL TEMPLATE original Filed Nov.\ 29, '1944 A TTo/M/E/.

.tion of holes arranged invdiver'selpatterns.

Patented Oct. 12, 1948 UNT-1 TED sirii-:rrEsl MULTIPLE .DRILL TEMPLATEHenry .oA.-shiiiiz, Milwaukee; 1 Wis.,` assign@ tu H. '0.A Schultz,Inc., Milwaukee, Wis., a'lco'rporation of Wisconsin `(')riginalapplication l November A29,-l 1944, Serial- 'No 5652628', nowllaten-twN.'2,441,722,-dated May 18, 1948.

`ible in its adaptations, and :highly :'ei'cient in operation.

Itrhasheretoiorefbeerrproposedtoprovider-various types of so-"called.'multiplefdrill heads for simultaneously driving 1'two 'or 'moreftwistdrills or the like, and for "eiectirrg,predetermined setting'of'thedrill points so as to permit'the-'formas However, these prior devicesfhave not Vprovenientirely satisfactory for various reasons- Whilesomle'of the previous drill driving heads 'were'.capable -of adjustment so asto vary the Vradii of -boltcircles on which'the groups of holescould:befsimultaneously drilled, thedrillingsrwererllmitedto circularpatterns and ycouldrnot -be readily'appliedto straight" line,rectangulan-andother` diversevand irregular arrangements, thusvmaterially restricting the utility of vthese :appliances Furthermore,in most of the prior-multipledrill-drives- .thedrill driving spindleswere inet-properly, supported against undesirable displacement1:after-adjust= ments. Were effected, .and rt-hey 1Were-also-'considerably-Vlimited as to the range...of vadjustment of the drills In addition,`considerable-careand tedious .manipulation` v,were necessary. ineffecting adinstmentsof the drill dri-ving spindles,4 and valuable timey was Vconsurmiteazl in-setting .up :the prior-multiple drill headsfforthe particularwor-k to be. perfor-mada For :thesesand other l.specificreasons, the previouslyV proposedmultiple-drill heads. .have .not provenespecially. popular with the trade, except ,perhaps .fon special,`purposes.

In. my ,co-pending.,application,f hereinabove identiedtliereis.disclosed an improvedimultiple drill driving assemblage lwhichihasmetwith wide? spread .approvaland acceptance and wherein two or. moredrill driving spindles .are quickly and conveniently universallyadjustable throughout an extensive range'. v

It is accordingly'a morespecific object rofthe present invention toprovide "improvedinst-rumentalities for use with rrxultipl'-r Idrill'driving mechanisnrs, which aid ineectil-'f-rapidvarrd'accurate' i andaidinginetheipreseieetedlebanon Divided and 'this application y.February 28,1948, Serial No'. 12,031

adjustments of the "drill drivingspindles'i imum` amount of time, andfurthermore =`t0-eectively retain and support tlie1difil`` undesirabledisplacement afterthe adjust A change Yin locationftn'eref-hasbeeneffected Another vspe'oic oloj'ect of this 'invention' n provide animprovetltemplte assemblagead :ti

ed'ffor use-With adjustable drill headsfor q ck and accurately effectingslective the-'drill axesina varietyff definite a volving 'eitherstraight or curv'edrrov ment of :theseaxes and diverse spacin-gltlr 4A'further specic'fobjedt-'o my in en en provide'i'mprovedinstrm'ntalitiesor 'p Ter-e212 'drillsof a-Iriultipledrillhafdingons,or 'other'patternsthroughout a'` ceriside'rably greater magnitude r"tiran the 1c'sectionalfareafof theheadi j stili another' sp'eeirie Lobje'ct' of thisinvention lisit'o 'providelimpr ved in'strume'rtalit'e's ivfor feci-,ingrapid' and 'ccurate' 'selective positi of-a munipiicity-oi`-=incuvidiia1drin'."siiimiles,-l no subsequent positive 'retention' oftne spindles--iri 'the'desiredloeationsl 'i Another- 'speciiiciabject; roi` my'invention i`s"-t provide a dur'able multi-'drill assembly' "adt'lplate.' therefor -whi'ch 'may'b'e nianufa'ctur'edfard maintainedA atlmoderate cost While L being treznely-` flexible in* its adaptationsffandWh'e drillsofvarious sizes may beireadi'ly'applied'arid removed and-ar'e r'nost effectively'driven W'liilf'n These and other specifcobjects an'd'advantages of fthe-,inventini'willile'iappalrenti'irolirltlieiil lowing detaileddescription'. f

.A clear conception Yof 'fthe several'ffeaturesoon'- stil-,utii'igy Amyinvention; arfd'ofr'thefmodf of foon'- structing-` ander utilizingtemplates forfm'ultiple' drill :heads embodying thefimprove'r'enu 'maybehad `by referring. to fthe" drawings accompanying and forminga-part-lothis specification vvh'erein like referencev charactersdesignate 'the -samef-f'or similarfpartsin thevariousfviews:

- y Figwl is affrag'lnentary-,part-sectionalfsidefele:

. 3 drill spindle drives associated therewith, showing the spindles andthe drill adaptors thereof positioned and held in symmetricalrectangular arrangement; Y Fig. 3 is afurther reducedplan view of thvlower positioningand spindle-retaining template which is finallyassociated with the multiple drill head to hold the spindles as in Fig.2; and

Fig. 4 is a similarly reduced plan/view ofthe upper template which isassociated with the drill head of Fig. 2 to elect quick positioning ofthe` spindles into the pattern formation shownthere- Y in and to alsoassist in holding the spindles in desired position; n

While the invention has been shown and described herein as beingembodied ,inY atypical.-`

jaws cooperable. withthe Yshank of a twist drill andthe tapered bore 50of the member 50, and

l g' also being provided with a polygonal upper end six spindle geardriven multiple drill head Vhav-v )e ing special drill adaptorsassociated therewith, it

is not my desire or intention to thereby unneces-y sarily restrict thescope or limit the Yutility of the improvements which are obviously moregenerally applicable.

Referring to the drawing, kthe improvedtypical multiple drill head'andimproved template thereforcomprise, in general, a series of drillspindle .shafts 30, shown herein as six in4 number, each having adriving gear 3l coacting with-an adjacent 4idler gear 28 and also havinga drill adaptor socket 32 at itsv lower end, the drill spindle shaftsbeing selectively'universally-swingable and adjustable relative to eachother about a series of idler shafts 26 and counter shafts, not shown,Ydriven through mechanism, fully shown and described in my co-pending gapplication,

Serial-No. 565,628, butrnot shown gherein, and= l housedwithin an uppercasing; a spindle housing 33 rotatably supporting each shaft 30 Vandenclosing the adjacent gear 3l, these housings being swingably suspended`from; adjacent idler housings, not'shown, for adjustmentaboutthe axesof the corresponding idler shafts 26 as fully disclosed Yin mylabove-identified co-pendingl application; ya clamping nut34. coactingwith end screw threads formedron each vidler shaftf26 and Y -With theadjacent spindle housing 33 to'rrmly lock the same invarious positionsVof adjustment;

and a pair of upper Vand lower mutually coacting Aspindle retainingtemplates 1.35, V36 respectively, suspended from the main upper casing',Vnot shown, by means of rigid columns 31 andcap screws 38, the templates35, 36 being formed toV engage the spindle housings 33 through bushings39 carried by these housings.

The variousV workingyparts may be suitably lubricated and sealed,`andthe drill spindle shafts boreeof the spindle socket 32 and having a key5|V secured` to one side thereof which isslidably cooperableV with akey-way 52 formed' in Vthe socket, Vwhile its oppositeside is` providedwith a Y tapered groover53 adapted tojcoactwith areadapted to snugly t asimilarly polygonal pocket 52 formed in the member 50; and a drillclamping screwv cooperable with the member 5l)V and with the collet inorder to draw the latter within .theibore Si! so as to cause the jaws ofthe collet to firmlyclamp the drill shank.Y The collets may be'Aprovided with drill shank engaging bores of diiTerent diameters adaptedto receive drills of different sizes, but all having tapered jaws whichare snugly cooperable With the taperedlbore of the member 5B, and theupper ends of the collet jaws are separated by a slot which is formed.to tthe upper flat ends of the drill Shanks. The improved adaptors-40are thereforefcapableof cooperating with standard twist drills ofyvarious sizes, and these drills may 'obviously bereadily applied ,orremoved and are firmly clampedwithinf the collets when properly appliedthereto.

,Y Since neither the adaptors, theI collect received thereby nor themechanisms for driving the drill spindle shafts 33;,and .for permittingswinging .movement and adjustability of Athese spindles constitute apart offthe'present invention, only Y sufficient structure Yhas-beenshown'rand described herein as is necessary for an understanding of thevapplication and mode of use of Vtherimproved template structure formingthe subject matter yof'this'invention; and this template assemblage may,of course, be-readily utilizedfwith any adjustable'multiple drill headwherein-.anysuitable adaptors andY collets are utilized and Vneedr'notbe confined to multiple' drillfhead assemblages of the' type shownyherein as'V merely a typicalY example.

Y The various adjustments .of Vthe individualY spindle shafts 30 may bequicklyand convenientlyy made upon Yremoval yof the'templates 35, 36.`and release of the clamping-nuts34,'and'these temspective' shaftswhereupon the upper template'f35 with its continuous edge formingl the`predeter` mined pattern'jmay be appliedl tothe columns 3 1 with thelbushings 39`pro'jec`ting Athrough the central opening. The*bushings35lmay then be c swung and positioned within the notches 45, 46K ofthepredetermined template pattern, and the nuts 34 should then -betightenedto'clamp the spindle housings Y3 3 andtheV respectiveidlerhous-rv ings in the desired position. The lower template- 33 maythereafterv be applied from beneath and both ofv` the templates35,3sshou1dnna11y,be;

. firmly secured lto thecolumns`31ivi`th the aid taining screw 54Vcarried by the socket 32,; a thrust collarV 55 havingvscrew threadcoaction with the outer end of the' member `511 and being Ypvrovitlod.

of theset screws 38, whereupon the notches 55,Y d6 and the alined roundholes 41 of thelowerf-` y template36in/'illpositively.maintain thespindleY Y shaftsr3liin. proper Vdesired position to conform with thepredetermined pattern. In the Ytypical drill head-f shownherin-'by wayf,examplaanuanimas friotionf'or ball thrust bearings` 48=are1preferablyintroduc'edfbetween l thefsockets -32 and :bushings 39,3as'fshown inl'igiiihinV order totavoid havingl thefend thrust:introduced=bytheindividual drills shift thef-spindle--shafts-30 upwardly into thehousings-33.

Duringvnormal use of the improvedtypical-assemblage, templates havingVpatterns of any. `suitableconfiguration-may beapplied to the columns31asehereinabovefullydescribed; and the-spindle sockets32 may bepositioned, with the aid of the proper-selected templates; toproduce-any VdesiredY pattern-within the Yrange of vswinging 'adjustmentaifoi'dedV by; the spindle housings l33^iandidler housings,` not shown:The individual twist drills may-obviously be-iirmly clamped-within thesocketSJBZ-lwith the aid of theimproved adaptors 40'; and the collets,not-shown, will permit the application/'of'- twist drills of differentdiameters, so that someI of these colletsmay be provided with drills ofa -predetermined -diameter While others may be provided` with drills oflarger-or smaller--Y diameters, thus-enhancing the flexibility of theunit to a maximum. Whenthe clamping nuts 34 have been placed intoclamping position, and the templates 35, 36, as Well as the pre-selecteddrills, have been properly applied, power may be applied to the maindriving shaft, and such application of power to the main driving sha-ftwill thereafter be transmitted through the several trains of gears, asfully described in my co-pending application, Serial No. 565,628, to thespindle shafts 30, and from thence to the individual drills so as topermit accurate drilling of holes following the preselected patternformed by the notched edge of the template 35 and the prearrangeddisposition of the holes 4l in the plate 36. The use of the templates35, 36 is particularly desirable when a large number of successivegroups of holes are to be drilled according to a predetermined pattern,and these templates 35, 36 will then afford additional support for thehousings 33`and spindle shafts 36. In the assemblage shown herein, thethrust induced during drilling operations upon the spindle shafts 3!!will be taken up by the antifriction bearings 48 and the gears 3| and 2Bwill therefore be relieved of end thrust and will be freely rotatablewith the application of minimum power. l

From the foregoing detailed description, it will be apparent that mypresent invention contemplates provision of improved instrumentalitiesfor aiding ln effecting rapid and accurate adjustments of the drilldriving spindles of a multiple drill mechanism, and which furtherfunction to effectively retain and insure positive positioning 'of themultiplicity of drills in the desired pattern.

The templates 35, 36 may be formed with any desired predeterminedpattern, and obviously afford a sturdy support for the housings 33 andspindle shafts 30 of the multiple drill head, thereby positivelyinsuring against undesirable displacement of the several drills afteradjustment thereof has been effected.

Through use of the improved templates, quick and accurate adjustments ofthe drill spindles 30 by persons of ordinary skill are possible, and thedrills may be positioned in a variety of definite patterns involvingeither straight or curved row arrangements. The improved templatestructures may obviously be manufactured at moderate cost, and may beutilized to effect considerable savings in time during set-up of themachines with which they are used as well as to insure accuracy in thework performed by the drills. These templatesemayl-be:readilyliused-awith'r:practiellyanyvk'n'own-l type of'drill-lhead-fassemblageshavin i Y a1-multi'pl-icityoffadjustablefdrill'drivingdspindles ,s and althoughftheyffhave :beenjshownf-andfA-de# scribed lherein r'asepartic'ularly-lapplicabledoof-adeljustablezldrill lieads foifthe typefffully disclosed fr my fco--pendilnlgj application aboveeidntid-vthel utility.:y i"thereofishould lznot ibel-lirnitedfr` thereto? These improved templates-areextremely-Bsimplel in-fconstructiong application-and useandi-maysbereadil'ylformedof-any suitableiand availablfsheet metalgf. and? they'have provenfhighly'lsatisfactoryL.

and-:efficientin'actualdzzommercialuse;L 1

It should b`eunderstoodY that .itA is not desiredlv orhintendedf-'toilimit thisinventiom to r-the-exact 'dee tailsofconstruction; or to thefprecise modeofuSer herein-shownfand'described;since various modi` cations-within thefscopemfV the appended-f claimsmay voccur to lpersonsLsliillellfin the'l art-to l`vv-hicli thisinvention pertains and template-assemblages'embodyingvariousdesignsiother than-thatfhe'reinparticularly shown andfdescribed may -rbefutie lizediinilikelfmanner-@and with equal successe-Iclaimisl2 A-teinplate fasser'nbla-ge-for'-usewithta' drillhead whereina plurality of drill spindles are adjustable laterally of each other,said template assemblage comprising, a template having a common openingdefining a predetermined pattern, means for rigidly positioning saidtemplate with respect to said drill head whereby all of said spindlesare freely laterally movable Within the common opening of said templatefor adjustment purposes, and a second template having a series ofindependent holes defining the same pattern and within which saidspindles are snugly connable but freely rotatable.

2. A template assemblage for use with a drill head wherein a pluralityof drill spindles are adjustable laterally of each other, said templateassemblage comprising, a template having a common opening defining apredetermined pattern, means for rigidly positioning said template withrespect to said drill head whereby all of said spindles are freelylaterally movable Within the common -opening of said template foradjustment purposes, a second template having a series of independentholes dening the same pattern and within which said spindles are snuglyconneable but freely rotatable, and means for clamping said templates insuperimposed condition.

3. A template assemblage for use with a drill head wherein a pluralityof depending drill spindles are adjustable laterally of each other, saidtemplate assemblage comprising. a template having a common openingdefining a predetermined pattern, supporting means for rigidlysuspending said template from said drill head whereby all of saidspindles are freely laterally movable within the common opening of saidtemplate for adjustment purposes, and a second template having a seriesof independent holes corresponding in number to said drill spindles anddefining the same pattern as the opening of said first-mentionedtemplate, said spindles being snugly conneable but freely rotatablewithin said independent holes.

4. A template assemblage for use with a drill head wherein a pluralityof depending drill spindles are adjustable laterally of each other, saidtemplate assemblage comprising, a template having a common openingdefining a predetermined pattern, supporting means for rigidlysuspending said template from said drill head whereby all of saidspindles are freely laterally movable 7 within the common opening ofsaid template for adjustment purposes, a second template having a seriesof independent holes corresponding in number to said drill spindles anddefining ythe same pattern as the opening of said first-mentionedtemplate, said spindles being snugly con-V iineable but freely rotatableWithin said independent holes, and means for clamping said templates insuperimposed condition.

5. A. template assemblage for use with a drill head wherein a pluralityof drill spindles are adjustable laterally of each other,v said templateassemblage comprising, a template carried by said ldrill head and havinga common opening defining a predetermined pattern Within which all ofsaid spindles are freely laterallyrmovable for adjust. ment purposes,and another template having a series of independent holes defining thesame pattern and within which said spindles are snugly conneable butfreely rotatable.

6. A template assemblage for use with a drill head wherein a pluralityof drill spindles are adjustable laterally of each other, said templateassemblage comprising a template having a continuous edge portiondefining a predetermined pattern, means for rigidly positioning saidtemof said spindles are freely movable against said continuouspattern-forming edge portion for adjustment purposes, and a secondtemplate having a series of independent'holes defining the same patternand within which said spindles are snugly conneable but freelyrotatable.

7. A template assemblage for use with a drill head wherein a pluralityof drill spindles are adjustable laterally of each other, said templateassemblage comprising a template having a continf uous edge portionprovided with notches defining a predetermined pattern, means forrigidly positioning said template with respect to said drill headwherebyy all of -said spindles are freely movable against saidcontinuous edge portion kand Within the pattern-forming notches thereoffor adjustment purposes, and a second template hav,` ing a series ofindependent holes dening the same pattern and within which said spindlesare snugly conneable but freely rotatable.

' .HENRY O'. SCHULTZ.y

No references cited.

